session problem

Question

I got an error when I added the session

Answer 1

Turn on PHP error reporting and then check again

Answer 2

When I watched the operation in the video, he did not introduce use think\session. Just write this.

Answer 3

F12 is all open, why not check the preview on the right side of Headers, the error message will be displayed here

I guess the session is not open, go to the auto_start in the session.php file under the configuration directory config Change the item to auto_start =false